Scientists drilling deep into the edge of modern Antarctica have pulled up proof that palm trees once grew there.Analyses of pollen and spores and the remains of tiny creatures have given a climatic picture of the early Eocene period, about 53 million years ago....
"There are two ways of looking at where we're going in the future," said a co-author of the study, James Bendle of the University of Glasgow
"One is using physics-based climate models; but increasingly we're using this 'back to the future' approach where we look through periods in the geological past that are similar to where we may be going in 10 years, or 20, or several hundred," he told BBC News
The early Eocene was a period of atmospheric CO2 concentrations higher than the current 390 parts per million (ppm )- reaching at least 600ppm and possibly far higher.Global temperatures were on the order of 5C higher, and there was no sharp divide in temperature between the poles and the equator...
"The more we get that information, the more it seems that the models we're using now are not overestimating the [climatic] change over the next few centuries, and they may be underestimating it. That's the essential message."Read it at BBC News Science & Environment
Palm trees 'grew on Antarctica'
Jason Palmer | Science and technology reporter
(h/t Yves Smith at Naked Capitalism)